Achilles Quotes in Poetics
Since tragedy is an imitation of people better than we are, one should imitate good portrait-painters. In rendering the individual form, they paint people as they are, but make them better-looking. In the same way the poet who is imitating people who are irascible or lazy or who have other traits of character of that sort should portray them as having these characteristics, but also as decent people. For example, Homer portrayed Achilles as both a good man and a paradigm of obstinacy.
Homer deserves praise for many reasons, but above all because he alone among poets is not ignorant of what he should do in his own person. The poet in person should say as little as possible; that is not what makes him an imitator. Other poets perform in person throughout, and imitate little and seldom; but after a brief preamble Homer introduces a man or a woman or some other character—and none of them are characterless: they have character.
While it is true that astonishment is an effect which should be sought in tragedy, the irrational (which is the most important source of astonishment) is more feasible in epic, because one is not looking at the agent. The pursuit of Hector would seem preposterous on stage, with the others standing by and taking no part in the pursuit while Achilles shakes his head to restrain them; but in epic it escapes notices.